block: make blk_try_req_merge() static

blk_try_req_merge() is only used in block/blk-merge.c, so make it
static.

This addresses a gcc warning when -Wmissing-prototypes is enabled.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/block/blk-merge.c b/block/blk-merge.c
index 91b2af3..da0217f 100644 (file)
--- a/block/blk-merge.c
+++ b/block/blk-merge.c
@@ -712,7 +712,8 @@ static inline bool blk_discard_mergable(struct request *req)
        return false;
 }
 
-enum elv_merge blk_try_req_merge(struct request *req, struct request *next)
+static enum elv_merge blk_try_req_merge(struct request *req,
+                                       struct request *next)
 {
        if (blk_discard_mergable(req))
                return ELEVATOR_DISCARD_MERGE;